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Home >> Subaru >> 2018 >> WRX STI >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (3 Of 4) (STI) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0851: Park/Neutral Switch Input Circuit Low >> Diagnostic Method
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Diagnostic Method

Judge NG when the malfunction criteria below are completed determined times or more after the neutral SW change.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Neutral switch output voltage = Battery voltage x 0.19 V

time needed for diagnosis:  1time(s)

Malfunction indicator light illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.